# Publications database

 2017-12-0514:22 [PUBDB-2017-12756] Journal Article CMS Collaboration Alignment of the CMS Tracker: Latest Results from LHC Run-II 22nd International Conference on Computing in High Energy and Nuclear Physics, CHEP2016, Meeting locationSan Francisco, United States of America, 14 Oct 2016 - 16 Oct 2016 Journal of physics / Conference Series 898, 042014 (2017) [10.3204/PUBDB-2017-12756]   The all-silicon design of the tracking system of the CMS experiment provides excellent measurements of charged-particle tracks and an efficient tagging of jets. Conditions of the CMS tracker changed repeatedly during the 2015/2016 shutdown and the 2016 data-taking period [...] External links: OpenAccess; OpenAccess; OpenAccess; OpenAccess; OpenAccess; OpenAccess 2017-12-0413:36 [PUBDB-2017-12741] Report/Internal Report Petkova, V. B. Z2 Monopoles in the Standard SU(2) Lattice Gauge Theory Model [DESY-79-022] The standardSU(2) lattice gauge theory model without fermions may be considered as aZ2 model with monopoles and fluctuating coupling constants. At low temperatures β−1 (=small bare coupling constant) the monopoles are confined.. External link: Fulltext 2017-12-0413:33 [PUBDB-2017-12740] Report/Internal Report Krasemann, H. Quarkonia [DESY-79-020] 65 pp. (1979) [10.1007/978-3-7091-8574-2_4]   When the J/ψ and ψ’ were discovered in fall 1974 [1] we all witnessed a dramatic and beautiful revival of the quark model [2]. The predicted new quark flavour, c = charm [3] could be added to the hadron spectroscopy by the interpretation of the new particles as c c¯ bound states. [...] External links: OpenAccess; OpenAccess; OpenAccess; OpenAccess; OpenAccess; OpenAccess 2017-12-0413:28 [PUBDB-2017-12739] Book/Report/Dissertation / PhD Thesis et al Micro-channel Cooling for Silicon Detectors [DESY-THESIS-2017-046] Hamburg : Verlag Deutsches Elektronen-Synchrotron, DESY-THESIS, 130 pp. (2018) [10.3204/PUBDB-2017-12739] = Dissertation, Universität Hamburg, 2017   Silicon tracking detectors employed in high-energy physics are located very close to the interactionpoints of the colliding particle beams. The high energetic radiation emerging from the interactioninduces defects into the silicon, downgrading the efficiency to collect the charges created by passingparticles and increasing the noise while data taking. [...] External links: OpenAccess; OpenAccess; OpenAccess; OpenAccess; OpenAccess; OpenAccess; OpenAccess; OpenAccess; OpenAccess; OpenAccess; OpenAccess 2017-12-0413:22 [PUBDB-2017-12738] Report/Internal Report Ono, S. Heavy Quarkonia and Asymptotic Freedom [DESY-79-009] We use semiclassical methods to discuss the scaling behaviour of quarkonium level splittings up to M( Q Q ) = 200 GeV . Special emphasis is laid on the effects of asymptotic freedom which are found to be essential for M( Q Q ) ⪆ 30 GeV . [...] 2017-12-0413:19 [PUBDB-2017-12737] Report/Internal Report et al DORIS AT 5-GeV [DESY-79-008] 40 pp. (1979) [10.3204/PUBDB-2017-12737]   External links: OpenAccess; OpenAccess; OpenAccess; OpenAccess; OpenAccess; OpenAccess 2017-12-0413:11 [PUBDB-2017-12736] Report/Internal Report Weisz, P. More About the S Matrix of the Chiral SU($N$) Thirring Model [DESY-79-004] We fix the bound state poles of the S -matrix of the chiral SU(N) Thirring model by general arguments. Avoiding an infrared problem by using a modified 1 N expansion, the result is confirmed in leading order.. 2017-12-0413:06 [PUBDB-2017-12735] Report/Internal Report Lazarides, G. The Effect of Statistical Fluctuations on Confinement and on the Vacuum Structure of the {CP}$^{(n-1)}$ Models [DESY-79-001] We study the two-dimensional C P n−1 non-linear σ -models at a finite temperature, T , within the 1/ n expansion. We show that permanent confinement of their fundamental particles is a strictly zero-temperature phenomenon. [...] 2017-12-0413:02 [PUBDB-2017-12734] Report/Internal Report Vaughn, M. T. ASYMPTOTIC FREEDOM CONSTRAINTS ON GRAND UNIFIED GAUGE THEORIES [DESY-78-078] Constraints on the fermion and Higgs scalar content of grand unified gauge theories, imposed by the requirement of asymptotic freedom for the gauge couplings, are derived for models which have fermion representations with only color singlets and color triplets. The constraintnf≦16 on the numbernf of flavors of color triplet quarks in pure QCD is removed. [...] External links: OpenAccess; OpenAccess; OpenAccess; OpenAccess; OpenAccess; OpenAccess 2017-12-0412:57 [PUBDB-2017-12733] Report/Internal Report et al Electron Energy and Position Measurement Using Lead Scintillator Calorimeters With a New Light Collection System [DESY-78-073] A lead - scintillator shower counter using a flourescent radiation converter for collecting scintillation light is described. For primary electrons of 1 GeV an energy resolution of 6–7.5% rms was obtained. [...]